.btn {
  display: inline-block;
  width: 100px;
  height: 30px;
  line-height: 30px;
  border: none;
  cursor: pointer;
  background-color: #FF6600;
  color: #ffffff;
}

.btn_default {
  background-color: gainsboro;
  color: white;
  width: 200px;
  height: 30px;
  line-height: 30px;
}

.btn_group .btn {
  margin-right: 20px;
}

.btn_group .btn:last-child {
  margin-right: 0px;
}
